1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23 /*
24 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
25 * Use is subject to license terms.
26 */
27
28 #include <stdio.h>
29
30 extern int _error(int do_perror, char *fmt, ...);
31 #define NO_PERROR 0
32 #define PERROR 1
33
34 /*
35 * Icon loader for eeprom command.
36 *
37 * Based on libsuntool/icon/icon_load.c 10.10 88/02/08
38 * See <suntool/icon_load.h> for icon file format.
39 */
40
41 int
loadlogo(char * name,int w,int h,char * logo)42 loadlogo(char *name, int w, int h, char *logo)
43 {
44 FILE *f;
45 int c = 0;
46 unsigned int val;
47 int icw = 64, ich = 64, bits = 16;
48 int count;
49
50 if (!(f = fopen(name, "r")))
51 return (_error(PERROR, "cannot open %s", name));
52
53 do {
54 int nval;
55 char slash;
56
57 if ((c = fscanf(f, "%*[^DFHVW*]")) == EOF)
58 break;
59
60 switch (c = getc(f)) {
61 case 'D':
62 if ((c = fscanf(f, "epth=%d", &nval)) == 1 &&
63 nval != 1)
64 goto badform;
65 break;
66 case 'F':
67 if ((c = fscanf(f, "ormat_version=%d", &nval)) == 1 &&
68 nval != 1)
69 goto badform;
70 break;
71 case 'H':
72 c = fscanf(f, "eight=%d", &ich);
73 break;
74 case 'V':
75 c = fscanf(f, "alid_bits_per_item=%d", &bits);
76 break;
77 case 'W':
78 c = fscanf(f, "idth=%d", &icw);
79 break;
80 case '*':
81 c = fscanf(f, "%c", &slash);
82 if (slash == '/')
83 goto eoh; /* end of header */
84 else
85 (void) ungetc(slash, f);
86 break;
87 }
88 } while (c != EOF);
89
90 eoh:
91 if (c == EOF ||
92 icw != w || ich != h ||
93 bits != 16 && bits != 32) {
94 badform:
95 (void) fclose(f);
96 return (_error(NO_PERROR, "header format error in %s", name));
97 }
98
99 for (count = ((w + (bits - 1)) / bits) * h; count > 0; count--) {
100 c = fscanf(f, " 0x%x,", &val);
101 if (c == 0 || c == EOF)
102 break;
103
104 switch (bits) {
105 case 32:
106 *logo++ = val >> 24;
107 *logo++ = val >> 16;
108 /* FALLTHRU */
109 case 16:
110 *logo++ = val >> 8;
111 *logo++ = val;
112 break;
113 }
114 }
115
116 (void) fclose(f);
117
118 if (count > 0)
119 return (_error(NO_PERROR, "data format error in %s", name));
120
121 return (0);
122 }
123